Improvement in card-grinding machines



B. S. ROY.

CARD-GRINDING MACHINE.

Patented Nov. 28, 1876.

W I TIES S E S N. PETERS, PHOTO-YUTHDGRAPH UNITED STATES PATENT QFFICE.

BOZIL- S. ROY, OF ROCK VILL E, CONNECTICUT.

IMPROVEMENT IN CARD-GRINDING MACHINES.

. Specification forinin g part of Letters Patent No. 184,909., dated November 28, 1876 application filed August 24, 1876.

To all whom it may concern Be it known that I, BOZIL S. ROY, of Rockville, in the county of Tolland and State of Connecticut, have invented certain new and useful Improvements pertaining to Card- Grinding Machines, of which the following is a specification, reference being bad to the accompanying drawings, where- Figure-1 is what may be called a front view of the parts embodying my improvements. Fig. 2 is a top view. Fig. 3 is a viewof the engaging pin. Fig. 4. is a view of same. Fig. 5 is an enlarged sectional View on plane 00 m. Fig. 6 is a view on plane yy, looking toward the link-flanges.

Letters Patent No. 173,672, dated February 15, 1876, for improvement in card-grinding machines, were granted to me, and the devices herein claimed are improvements on the mechanism shown in said patent.

The feature of improvement and invention is an improvement in the shape and construction of the engaging-pin.

The letter a denotes the chain running on the pulleys b b, and having an intermediate guide-pulley, c. All three are aflixed to the frame-piece d, so that the whole can be assembled, and, as a whole, introduced into the tube in which they work. Pulley I) is not fixed rigidly to piece d, but to cross-head e, which slides in a dovetail groove in piece (1, and the the mortise.

The head or T end is introduced through the mortise in the arm when the pin lies across the screw f, at which time the length of the T end lies in the same direction with the mortise in the arm. When the pin moves away from the pulley b, it is practically r0- tated a quarter-turn, while the arm remains in vertical position. The pin ghas at its base the flanges g 9 pierced by eyes g 9 through which pins are introduced to connect them to the links of the chain.

I claim as my invention 'In combination, the chain a and pin g, having the T end.

BOZIL S. ROY. Witnesses:

E. U. COLBY, GELoN W. WEST. 

